CN109282424A - Air-conditioner control method, air conditioner controlling device - Google Patents
Air-conditioner control method, air conditioner controlling device Download PDFInfo
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- CN109282424A CN109282424A CN201811102938.9A CN201811102938A CN109282424A CN 109282424 A CN109282424 A CN 109282424A CN 201811102938 A CN201811102938 A CN 201811102938A CN 109282424 A CN109282424 A CN 109282424A
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- indoor unit
- difference
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- outlet temperature
- temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
Abstract
The present invention provides a kind of air-conditioner control methods, air conditioner controlling device.Wherein, air-conditioner control method, comprising: when air conditioner powers on and shuts down, obtain the inlet temperature and outlet temperature of indoor unit, calculate the difference a between inlet temperature and outlet temperature；Judge whether the absolute value of difference a is less than or equal to first threshold；When the judgment result is no, determine that electric expansion valve breaks down, carry out failure prompting.Air-conditioner control method through the invention, electronic expansion valve of indoor unit fault condition can be detected in time, and it is prompted after detecting that electric expansion valve breaks down, it avoids causing air conditioner further to damage due to electronic expansion valve of indoor unit failure, keep system operation relatively reliable, extend air conditioner service life, promotes user satisfaction.
Description
Technical field
The present invention relates to air conditioner technical fields, in particular to a kind of air-conditioner control method and a kind of air-conditioning
Device control device.
Background technique
Multi-connected air conditioner is favored by the majority of users in recent years, compared with traditional air conditioner, not only in Energy Saving Control and
One drags more technologies etc. to have a clear superiority, and the feature on comfort and convenience is especially prominent.Multi-connected air conditioner
Interior machine often uses electric expansion valve and accurately controls cold medium flux, machine within institute to guarantee comfort and system reliability
Electric expansion valve plays an important role within air-conditioning systems.
But the factors such as impurity cause electric expansion valve to damage in construction and installation, or electronics is swollen in routine use
Swollen valve reaches service life and damages, and with the damage of interior machine electric expansion valve, often brings to entire air-conditioning system various
Serious consequence.So can judge in time after the damage of interior machine electric expansion valve particularly important.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, it is an aspect of the invention to propose a kind of air-conditioner control method.
Another aspect of the present invention is to propose a kind of air conditioner controlling device.
In view of this, air conditioner includes indoor unit the invention proposes a kind of air-conditioner control method, indoor unit includes electricity
Sub- expansion valve, method include: to obtain the inlet temperature and outlet temperature of indoor unit when air conditioner powers on and shuts down, calculate into
Difference a between mouth temperature and outlet temperature；Judge whether the absolute value of difference a is less than or equal to first threshold；When judgement is tied
When fruit is no, determines that electric expansion valve breaks down, carry out failure prompting.
Air-conditioner control method according to the present invention, in air conditioner room unit inlet and outlet position, setting temperature is passed respectively
Sensor detects the inlet temperature and outlet temperature of indoor unit, calculates temperature gap between the two when air conditioner powers on and shuts down
A, and judge whether the absolute value of difference a is less than or equal to first threshold, since electric expansion valve has been shut when air conditioner is shut down
Or it is transferred to minimum aperture, pass through in pipeline without refrigerant, therefore indoor unit inlet temperature and outlet temperature should all be close to environment temperature
Degree just illustrates that failure occurs in electric expansion valve when the absolute value of difference a between the two is greater than first threshold, such as blocks event
Barrier, when determining that electric expansion valve breaks down, control indoor unit, outdoor unit carry out failure prompting, or display fault code, whole
Machine is not run.Wherein, it should be appreciated by those skilled in the art that first threshold is greater than zero and close to zero, but specific number is not limited
Value.According to the technical solution of the present invention, electronic expansion valve of indoor unit fault condition can be detected in time, and is detecting electronics
Expansion valve is prompted after breaking down, and is avoided causing air conditioner further to damage due to electronic expansion valve of indoor unit failure, be made
System operation is relatively reliable, extends air conditioner service life, promotes user satisfaction.
In the above-mentioned technical solutions, it is preferable that method further include: the quantity of indoor unit is multiple；When judging each interior
When the corresponding difference a of machine is respectively less than or is equal to first threshold, control outdoor unit booting, and control preset quantity indoor unit and open system
Cold mode；The indoor unit for opening refrigeration mode is denoted as indoor unit X1, the indoor unit for not opening refrigeration mode is denoted as indoor unit
X2；After preset duration, the inlet temperature and outlet temperature of indoor unit X1 are obtained, is calculated between outlet temperature and inlet temperature
Difference b；Judge whether difference b is greater than or equal to second threshold；When the judgment result is no, determine for detecting indoor unit X1's
Import temperature sensing package and/or outlet temperature sensing package are abnormal, carry out failure prompting；Wherein, the difference of the total quantity and preset quantity of indoor unit
Value is greater than or equal to 1.
In the technical scheme, air conditioner includes multiple indoor units, such as multi-connected air conditioner device, when each indoor unit import temperature
When degree and the difference a of outlet temperature are respectively less than or are equal to first threshold, system enters to be judged in next step.Specifically, outdoor unit
Normal boot-strap, setting one or more indoor unit X1 open refrigeration mode, and the available machine time is preset duration, wherein indoor unit X1
Quantity (i.e. preset quantity) must satisfy indoor unit total quantity and preset quantity difference be greater than or equal to 1；Preset time
Setting it is related to air conditioner current operating condition such as frequency etc., it is intended to make air conditioner be switched on after operate normally, with obtain
The inlet temperature and outlet temperature of indoor unit X1 under to normal refrigerating state, by judge both outlet temperature and inlet temperature it
Between difference b whether be greater than or equal to second threshold, when the judgment result is No, can determine that for detecting indoor unit X1 import temperature
The import temperature sensing package and outlet temperature sensing package abnormal state of degree and outlet temperature, as temperature sensing package is improperly situated, temperature sensing package hair
Tubule fracture etc., controls indoor unit X1, outdoor unit at this time, carries out failure prompting, or display fault code, complete machine are not run.Its
In, second threshold is greater than zero.According to the technical solution of the present invention, can detect whether indoor unit temperature sensing package is abnormal in time, and
Fault cues are carried out when detecting temperature sensing package exception, avoid influencing the inspection of electric expansion valve failure because of temperature sensing package performance issue
It surveys, to avoid air conditioner longtime running under electric expansion valve fault condition, causes air conditioner further to damage, transport system
Row is relatively reliable.
In any of the above-described technical solution, it is preferable that method further include: judging the corresponding difference b of each indoor unit X1
When being all larger than or being equal to second threshold, the inlet temperature and outlet temperature of indoor unit X2 are obtained, calculates inlet temperature and outlet temperature
Difference c between degree；Judge whether the absolute value of difference c is less than or equal to third threshold value；When the judgment result is no, determine room
The electric expansion valve of interior machine X2 breaks down, and carries out failure prompting.
It in the technical scheme, can when judging that the corresponding difference b of each indoor unit X1 is all larger than or is equal to second threshold
Determine that indoor unit XI temperature sensing package is normal, system enters to be judged in next step.Specifically, detecting the indoor unit X2's that other are not opened
Inlet temperature and outlet temperature, general indoor unit X2 electric expansion valve is normal, can't be to interior when indoor unit X1 opens refrigeration
Machine X2 inlet temperature has an impact with outlet temperature, therefore by calculating temperature gap c between the two, and judges difference c's
Whether absolute value is less than or equal to third threshold value, can determine whether indoor unit X2 electric expansion valve is abnormal, if difference c
Absolute value is greater than third threshold value, then just illustrate that failure has occurred in electric expansion valve, when electric expansion valve breaks down, control
Indoor unit X2, outdoor unit carry out failure prompting, or display fault code, complete machine are not run.According to the technical solution of the present invention, energy
It is enough to detect electronic expansion valve of indoor unit fault condition in time, and prompted after detecting that electric expansion valve breaks down,
It avoids causing air conditioner further to damage due to electronic expansion valve of indoor unit failure, keeps system operation relatively reliable, extend air-conditioning
Device service life promotes user satisfaction.
In any of the above-described technical solution, it is preferable that method further include: when judging the corresponding difference c of each indoor unit X2
Absolute value when being respectively less than or being equal to third threshold value, control each indoor unit X1 shutdown, and control each indoor unit X2 and open system
Cold mode；After preset duration, obtain the inlet temperature and outlet temperature of indoor unit X2, calculate outlet temperature and inlet temperature it
Between difference d；Judge whether difference d is greater than or equal to the 4th threshold value；When the judgment result is no, determine for detecting indoor unit
The import temperature sensing package and/or outlet temperature sensing package of X2 is abnormal, carries out failure prompting.
In the technical scheme, it is respectively less than or is equal in the absolute value of the corresponding difference c of each indoor unit X2 not opened
When third threshold value, it can determine that the electric expansion valve of indoor unit X2 is normal, system can enter to be judged in next step.Specifically, closing
The indoor unit X1 of refrigeration mode is opened, and controls the indoor unit X2 not opened and opens refrigeration mode, and run preset duration, it is outdoor
Machine normal boot-strap detects indoor unit X2 inlet temperature and outlet temperature, calculates outlet temperature and the temperature of inlet temperature between the two
Difference d, and judge whether difference d is greater than or equal to the 4th threshold value, if judging result be it is no, illustrate the import for indoor unit X2
Temperature sensing package and outlet temperature sensing package break down, such as temperature sensing package is improperly situated, the fracture of temperature sensing package capillary, is controlled at this time
Indoor unit X2, outdoor unit carry out failure prompting, or display fault code, complete machine are not run.According to the technical solution of the present invention,
Whether abnormal can detect indoor unit temperature sensing package in time, and carry out fault cues when detecting temperature sensing package exception, avoid because
Temperature sensing package performance issue influences the detection of electric expansion valve failure, to avoid air conditioner long under electric expansion valve fault condition
Phase operation, causes air conditioner further to damage, and keeps system operation relatively reliable.
In any of the above-described technical solution, it is preferable that method further include: when judging the corresponding difference d of each indoor unit X2
When being all larger than or being equal to four threshold values, the inlet temperature and outlet temperature of indoor unit X1 are obtained, calculates inlet temperature and outlet temperature
Difference e between degree；Judge whether the absolute value of difference e is less than or equal to the 5th threshold value；When the judgment result is no, determine room
The electric expansion valve of interior machine X1 breaks down, and carries out failure prompting.
In the technical scheme, the is all larger than or is equal in each corresponding difference d of indoor unit X2 for opening refrigeration mode
When four threshold values, illustrate that indoor unit X2 temperature sensing package is normal, system enters to be judged in next step.Specifically, detecting what other were not opened
The inlet temperature and outlet temperature of indoor unit X1, general indoor unit X1 electric expansion valve is normal, when indoor unit X2 opens refrigeration, and
Indoor unit X1 inlet temperature will not be had an impact, therefore by calculating temperature gap e between the two with outlet temperature, and sentenced
Whether the absolute value of disconnected difference e is less than or equal to the 5th threshold value, can determine whether indoor unit X1 electric expansion valve is abnormal, such as
The absolute value of fruit difference e is greater than the 5th threshold value, then just illustrating that failure has occurred in electric expansion valve, when event occurs for electric expansion valve
When barrier, control indoor unit X1, outdoor unit carry out failure prompting, or display fault code, complete machine are not run.Skill through the invention
Art scheme can detect electronic expansion valve of indoor unit fault condition in time, and after detecting that electric expansion valve breaks down
It is prompted, avoids causing air conditioner further to damage due to electronic expansion valve of indoor unit failure, keep system operation relatively reliable,
Extend air conditioner service life, promotes user satisfaction.
The invention also provides a kind of air conditioner controlling device, air conditioner includes indoor unit, and indoor unit includes electronic expansion
Valve, device includes: memory, for storing computer program；Processor, for execute computer program with: in air conditioner
When electricity and shutdown, the inlet temperature and outlet temperature of indoor unit are obtained, calculates the difference a between inlet temperature and outlet temperature；
Judge whether the absolute value of difference a is less than or equal to first threshold；When the judgment result is no, determine that event occurs for electric expansion valve
Barrier carries out failure prompting.
Air conditioner controlling device according to the present invention, in air conditioner room unit inlet and outlet position, setting temperature is passed respectively
Sensor detects the inlet temperature and outlet temperature of indoor unit, calculates temperature gap between the two when air conditioner powers on and shuts down
A, and judge whether the absolute value of difference a is less than or equal to first threshold, since electric expansion valve has been shut when air conditioner is shut down
Or it is transferred to minimum aperture, pass through in pipeline without refrigerant, therefore indoor unit inlet temperature and outlet temperature should all be close to environment temperature
Degree just illustrates that failure occurs in electric expansion valve when the absolute value of difference a between the two is greater than first threshold, such as blocks event
Barrier, when determining that electric expansion valve breaks down, control indoor unit, outdoor unit carry out failure prompting, or display fault code, whole
Machine is not run.Wherein, it should be appreciated by those skilled in the art that first threshold is greater than zero and close to zero, but specific number is not limited
Value.According to the technical solution of the present invention, electronic expansion valve of indoor unit fault condition can be detected in time, and is detecting electronics
Expansion valve is prompted after breaking down, and is avoided causing air conditioner further to damage due to electronic expansion valve of indoor unit failure, be made
System operation is relatively reliable, extends air conditioner service life, promotes user satisfaction.
In the above-mentioned technical solutions, it is preferable that the quantity of indoor unit is multiple；Processor is also used to execute computer journey
Sequence with: when judging that the corresponding difference a of each indoor unit is respectively less than or is equal to first threshold, control outdoor unit booting and is controlled
Preset quantity indoor unit opens refrigeration mode；The indoor unit for opening refrigeration mode is denoted as indoor unit X1, refrigeration mould will not opened
The indoor unit of formula is denoted as indoor unit X2；After preset duration, the inlet temperature and outlet temperature of indoor unit X1 are obtained, calculates outlet
Difference b between temperature and inlet temperature；Judge whether difference b is greater than or equal to second threshold；When the judgment result is no, sentence
Fixed import temperature sensing package and/or outlet temperature sensing package for detecting indoor unit X1 is abnormal, carries out failure prompting；Wherein, indoor unit
The difference of total quantity and preset quantity is greater than or equal to 1.
In the technical scheme, air conditioner includes multiple indoor units, such as multi-connected air conditioner device, when each indoor unit import temperature
When degree and the difference a of outlet temperature are respectively less than or are equal to first threshold, system enters to be judged in next step.Specifically, outdoor unit
Normal boot-strap, setting one or more indoor unit X1 open refrigeration mode, and the available machine time is preset duration, wherein indoor unit X1
Quantity (i.e. preset quantity) must satisfy indoor unit total quantity and preset quantity difference be greater than or equal to 1；Preset time
Setting it is related to air conditioner current operating condition such as frequency etc., it is intended to make air conditioner be switched on after operate normally, with obtain
The inlet temperature and outlet temperature of indoor unit X1 under to normal refrigerating state, by judge both outlet temperature and inlet temperature it
Between difference b whether be greater than or equal to second threshold, when the judgment result is No, can determine that for detecting indoor unit X1 import temperature
The import temperature sensing package and outlet temperature sensing package abnormal state of degree and outlet temperature, as temperature sensing package is improperly situated, temperature sensing package hair
Tubule fracture etc., controls indoor unit X1, outdoor unit at this time, carries out failure prompting, or display fault code, complete machine are not run.Its
In, second threshold is greater than zero.According to the technical solution of the present invention, can detect whether indoor unit temperature sensing package is abnormal in time, and
Fault cues are carried out when detecting temperature sensing package exception, avoid influencing the inspection of electric expansion valve failure because of temperature sensing package performance issue
It surveys, to avoid air conditioner longtime running under electric expansion valve fault condition, causes air conditioner further to damage, transport system
Row is relatively reliable.
In any of the above-described technical solution, it is preferable that processor, be also used to execute computer program with: it is each in judgement
When the corresponding difference b of indoor unit X1 is all larger than or is equal to second threshold, the inlet temperature and outlet temperature of indoor unit X2, meter are obtained
Calculate the difference c between inlet temperature and outlet temperature；Judge whether the absolute value of difference c is less than or equal to third threshold value；When sentencing
When disconnected result is no, determines that the electric expansion valve of indoor unit X2 breaks down, carry out failure prompting.
It in the technical scheme, can when judging that the corresponding difference b of each indoor unit X1 is all larger than or is equal to second threshold
Determine that indoor unit XI temperature sensing package is normal, system enters to be judged in next step.Specifically, detecting the indoor unit X2's that other are not opened
Inlet temperature and outlet temperature, general indoor unit X2 electric expansion valve is normal, can't be to interior when indoor unit X1 opens refrigeration
Machine X2 inlet temperature has an impact with outlet temperature, therefore by calculating temperature gap c between the two, and judges difference c's
Whether absolute value is less than or equal to third threshold value, can determine whether indoor unit X2 electric expansion valve is abnormal, if difference c
Absolute value is greater than third threshold value, then just illustrate that failure has occurred in electric expansion valve, when electric expansion valve breaks down, control
Indoor unit X2, outdoor unit carry out failure prompting, or display fault code, complete machine are not run.According to the technical solution of the present invention, energy
It is enough to detect electronic expansion valve of indoor unit fault condition in time, and prompted after detecting that electric expansion valve breaks down,
It avoids causing air conditioner further to damage due to electronic expansion valve of indoor unit failure, keeps system operation relatively reliable, extend air-conditioning
Device service life promotes user satisfaction.
In any of the above-described technical solution, it is preferable that processor, be also used to execute computer program with: when judgement is each
When the absolute value of the corresponding difference c of indoor unit X2 is respectively less than or is equal to third threshold value, each indoor unit X1 shutdown is controlled, and control
Each indoor unit X2 opens refrigeration mode；After preset duration, the inlet temperature and outlet temperature of indoor unit X2 are obtained, is calculated
Difference d between mouth temperature and inlet temperature；Judge whether difference d is greater than or equal to the 4th threshold value；When the judgment result is no,
Determine the import temperature sensing package and/or outlet temperature sensing package exception for detecting indoor unit X2, carries out failure prompting.
In the technical scheme, it is respectively less than or is equal in the absolute value of the corresponding difference c of each indoor unit X2 not opened
When third threshold value, it can determine that the electric expansion valve of indoor unit X2 is normal, system can enter to be judged in next step.Specifically, closing
The indoor unit X1 of refrigeration mode is opened, and controls the indoor unit X2 not opened and opens refrigeration mode, and run preset duration, it is outdoor
Machine normal boot-strap detects indoor unit X2 inlet temperature and outlet temperature, calculates outlet temperature and the temperature of inlet temperature between the two
Difference d, and judge whether difference d is greater than or equal to the 4th threshold value, if judging result be it is no, illustrate the import for indoor unit X2
Temperature sensing package and outlet temperature sensing package break down, such as temperature sensing package is improperly situated, the fracture of temperature sensing package capillary, is controlled at this time
Indoor unit X2, outdoor unit carry out failure prompting, or display fault code, complete machine are not run.According to the technical solution of the present invention,
Whether abnormal can detect indoor unit temperature sensing package in time, and carry out fault cues when detecting temperature sensing package exception, avoid because
Temperature sensing package performance issue influences the detection of electric expansion valve failure, to avoid air conditioner long under electric expansion valve fault condition
Phase operation, causes air conditioner further to damage, and keeps system operation relatively reliable.
In any of the above-described technical solution, it is preferable that processor, be also used to execute computer program with: when judgement is each
When the corresponding difference d of indoor unit X2 is all larger than or is equal to four threshold values, the inlet temperature and outlet temperature of indoor unit X1, meter are obtained
Calculate the difference e between inlet temperature and outlet temperature；Judge whether the absolute value of difference e is less than or equal to the 5th threshold value；When sentencing
When disconnected result is no, determines that the electric expansion valve of indoor unit X1 breaks down, carry out failure prompting.
In the technical scheme, the is all larger than or is equal in each corresponding difference d of indoor unit X2 for opening refrigeration mode
When four threshold values, illustrate that indoor unit X2 temperature sensing package is normal, system enters to be judged in next step.Specifically, detecting what other were not opened
The inlet temperature and outlet temperature of indoor unit X1, general indoor unit X1 electric expansion valve is normal, when indoor unit X2 opens refrigeration, and
Indoor unit X1 inlet temperature will not be had an impact, therefore by calculating temperature gap e between the two with outlet temperature, and sentenced
Whether the absolute value of disconnected difference e is less than or equal to the 5th threshold value, can determine whether indoor unit X1 electric expansion valve is abnormal, such as
The absolute value of fruit difference e is greater than the 5th threshold value, then just illustrating that failure has occurred in electric expansion valve, when event occurs for electric expansion valve
When barrier, control indoor unit X1, outdoor unit carry out failure prompting, or display fault code, complete machine are not run.Skill through the invention
Art scheme can detect electronic expansion valve of indoor unit fault condition in time, and after detecting that electric expansion valve breaks down
It is prompted, avoids causing air conditioner further to damage due to electronic expansion valve of indoor unit failure, keep system operation relatively reliable,
Extend air conditioner service life, promotes user satisfaction.
Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention
Recognize.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 shows the flow diagram of air-conditioner control method according to an embodiment of the invention；
Fig. 2 shows the flow diagrams of air-conditioner control method according to another embodiment of the invention；
Fig. 3 shows the flow diagram of the air-conditioner control method of still another embodiment in accordance with the present invention；
Fig. 4 shows the flow diagram of air-conditioner control method according to still another embodiment of the invention；
Fig. 5 shows the flow diagram of air-conditioner control method according to still another embodiment of the invention；
Fig. 6 shows the schematic diagram of air conditioner controlling device according to an embodiment of the invention；
Fig. 7 a shows the schematic diagram of the air conditioner of a specific embodiment according to the present invention；
Fig. 7 b shows the schematic diagram of the air conditioner room unit of a specific embodiment according to the present invention；
Fig. 7 c shows the flow diagram of the air-conditioner control method of a specific embodiment according to the present invention.
Wherein, the corresponding relationship in Fig. 7 a to Fig. 7 b between appended drawing reference and component names are as follows:
702 outdoor units, 704 indoor units.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
As shown in Figure 1, the flow diagram of air-conditioner control method according to an embodiment of the invention.Wherein, empty
Adjusting device includes indoor unit, and indoor unit includes electric expansion valve, the air-conditioner control method, comprising:
Step 102, when air conditioner powers on and shuts down, the inlet temperature and outlet temperature of indoor unit are obtained, calculates import
Difference a between temperature and outlet temperature；
Step 104, judge whether the absolute value of difference a is less than or equal to first threshold；
Step 106, when the judgment result is no, determine that electric expansion valve breaks down, carry out failure prompting.
Air-conditioner control method provided by the invention, in air conditioner room unit inlet and outlet position, setting temperature is passed respectively
Sensor detects the inlet temperature and outlet temperature of indoor unit, calculates temperature gap between the two when air conditioner powers on and shuts down
A, and judge whether the absolute value of difference a is less than or equal to first threshold, since electric expansion valve has been shut when air conditioner is shut down
Or it is transferred to minimum aperture, pass through in pipeline without refrigerant, therefore indoor unit inlet temperature and outlet temperature should all be close to environment temperature
Degree just illustrates that failure occurs in electric expansion valve when the absolute value of difference a between the two is greater than first threshold, such as blocks event
Barrier, when determining that electric expansion valve breaks down, control indoor unit, outdoor unit carry out failure prompting, or display fault code, whole
Machine is not run.Wherein, it should be appreciated by those skilled in the art that first threshold is greater than zero and close to zero, but specific number is not limited
Value.Control method through the invention can detect electronic expansion valve of indoor unit fault condition in time, and detect electronics
Expansion valve is prompted after breaking down, and is avoided causing air conditioner further to damage due to electronic expansion valve of indoor unit failure, be made
System operation is relatively reliable, extends air conditioner service life, promotes user satisfaction.
As shown in Fig. 2, the flow diagram of air-conditioner control method according to another embodiment of the invention.Wherein,
Air conditioner includes multiple indoor units, and each indoor unit includes electric expansion valve, the air-conditioner control method, comprising:
Step 202, when air conditioner powers on and shuts down, the inlet temperature and outlet temperature of indoor unit are obtained, calculates import
Difference a between temperature and outlet temperature；
Step 204, judge whether the absolute value of difference a is less than or equal to first threshold；
Step 206, when the judgment result is no, determine that electric expansion valve breaks down, carry out failure prompting；
Step 208, when judging that the corresponding difference a of each indoor unit is respectively less than or is equal to first threshold, outdoor unit is controlled
Booting, and control preset quantity indoor unit and open refrigeration mode；
The indoor unit for opening refrigeration mode is denoted as indoor unit X1, the indoor unit for not opening refrigeration mode is denoted as indoor unit
X2；
Step 210, after preset duration, obtain indoor unit X1 inlet temperature and outlet temperature, calculate outlet temperature and
Difference b between inlet temperature；
Step 212, judge whether difference b is greater than or equal to second threshold；
Step 214, when the judgment result is no, determine the import temperature sensing package and/or mouthfeel out for detecting indoor unit X1
Thermometer bulb is abnormal, carries out failure prompting；
Wherein, the difference of the total quantity and preset quantity of indoor unit is greater than or equal to 1.
In this embodiment, air conditioner includes multiple indoor units, such as multi-connected air conditioner device, when each indoor unit inlet temperature
When being respectively less than with the difference a of outlet temperature or be equal to first threshold, system enters to be judged in next step.Specifically, outdoor unit is just
Normally opened machine, setting one or more indoor unit X1 open refrigeration mode, and the available machine time is preset duration, wherein indoor unit X1's
The difference of total quantity and preset quantity that quantity (i.e. preset quantity) must satisfy indoor unit is greater than or equal to 1；Preset time
It is arranged related to air conditioner current operating condition such as frequency etc., it is intended to be operated normally after so that air conditioner is switched on, to get
The inlet temperature and outlet temperature of indoor unit X1 under normal refrigerating state, by judging outlet temperature and inlet temperature between the two
Difference b whether be greater than or equal to second threshold, when the judgment result is No, can determine that for detecting indoor unit X1 inlet temperature
With the import temperature sensing package of outlet temperature and outlet temperature sensing package abnormal state, as temperature sensing package is improperly situated, temperature sensing package capillary
Pipe fracture etc., controls indoor unit X1, outdoor unit at this time, carries out failure prompting, or display fault code, complete machine are not run.Wherein,
Second threshold is greater than zero.Whether abnormal control method through the invention can detect indoor unit temperature sensing package in time, and examine
Fault cues are carried out when measuring temperature sensing package exception, avoid influencing the detection of electric expansion valve failure because of temperature sensing package performance issue, from
And air conditioner longtime running under electric expansion valve fault condition is avoided, it causes air conditioner further to damage, makes system operation more
Add reliable.
As shown in figure 3, the flow diagram of the air-conditioner control method of still another embodiment in accordance with the present invention.Wherein,
Air conditioner includes multiple indoor units, and each indoor unit includes electric expansion valve, the air-conditioner control method, comprising:
Step 302, when air conditioner powers on and shuts down, the inlet temperature and outlet temperature of indoor unit are obtained, calculates import
Difference a between temperature and outlet temperature；
Step 304, judge whether the absolute value of difference a is less than or equal to first threshold；
Step 306, when the judgment result is no, determine that electric expansion valve breaks down, carry out failure prompting；
Step 308, when judging that the corresponding difference a of each indoor unit is respectively less than or is equal to first threshold, outdoor unit is controlled
Booting, and control preset quantity indoor unit and open refrigeration mode；
The indoor unit for opening refrigeration mode is denoted as indoor unit X1, the indoor unit for not opening refrigeration mode is denoted as indoor unit
X2；
Step 310, after preset duration, obtain indoor unit X1 inlet temperature and outlet temperature, calculate outlet temperature and
Difference b between inlet temperature；
Step 312, judge whether difference b is greater than or equal to second threshold；
Step 314, when the judgment result is no, determine the import temperature sensing package and/or mouthfeel out for detecting indoor unit X1
Thermometer bulb is abnormal, carries out failure prompting；
Wherein, the difference of the total quantity and preset quantity of indoor unit is greater than or equal to 1；
Step 316, it when judging that the corresponding difference b of each indoor unit X1 is all larger than or is equal to second threshold, obtains indoor
The inlet temperature and outlet temperature of machine X2 calculates the difference c between inlet temperature and outlet temperature；
Step 318, judge whether the absolute value of difference c is less than or equal to third threshold value；
Step 320, when the judgment result is no, determine that the electric expansion valve of indoor unit X2 breaks down, carry out failure and mention
It wakes up.
In this embodiment, when judging that the corresponding difference b of each indoor unit X1 is all larger than or is equal to second threshold, can sentence
It is normal to determine indoor unit XI temperature sensing package, system enters to be judged in next step.Specifically, detect the indoor unit X2 that other are not opened into
Mouth temperature and outlet temperature, general indoor unit X2 electric expansion valve is normal, can't be to indoor unit when indoor unit X1 opens refrigeration
X2 inlet temperature has an impact with outlet temperature, therefore by calculating temperature gap c between the two, and judges that difference c's is exhausted
Whether third threshold value is less than or equal to value, can determine whether indoor unit X2 electric expansion valve is abnormal, if difference c's is exhausted
Third threshold value is greater than to value, then just illustrate that failure has occurred in electric expansion valve, when electric expansion valve breaks down, control room
Interior machine X2, outdoor unit carry out failure prompting, or display fault code, complete machine are not run.Control method through the invention, can
It detects electronic expansion valve of indoor unit fault condition in time, and is prompted after detecting that electric expansion valve breaks down, kept away
Exempt to cause air conditioner further to damage due to electronic expansion valve of indoor unit failure, keeps system operation relatively reliable, extend air conditioner
Service life promotes user satisfaction.
As shown in figure 4, the flow diagram of air-conditioner control method according to still another embodiment of the invention.Wherein,
Air conditioner includes multiple indoor units, and each indoor unit includes electric expansion valve, the air-conditioner control method, comprising:
Step 402, when air conditioner powers on and shuts down, the inlet temperature and outlet temperature of indoor unit are obtained, calculates import
Difference a between temperature and outlet temperature；
Step 404, judge whether the absolute value of difference a is less than or equal to first threshold；
Step 406, when the judgment result is no, determine that electric expansion valve breaks down, carry out failure prompting；
Step 408, when judging that the corresponding difference a of each indoor unit is respectively less than or is equal to first threshold, outdoor unit is controlled
Booting, and control preset quantity indoor unit and open refrigeration mode；
The indoor unit for opening refrigeration mode is denoted as indoor unit X1, the indoor unit for not opening refrigeration mode is denoted as indoor unit
X2；
Step 410, after preset duration, obtain indoor unit X1 inlet temperature and outlet temperature, calculate outlet temperature and
Difference b between inlet temperature；
Step 412, judge whether difference b is greater than or equal to second threshold；
Step 414, when the judgment result is no, determine the import temperature sensing package and/or mouthfeel out for detecting indoor unit X1
Thermometer bulb is abnormal, carries out failure prompting；
Wherein, the difference of the total quantity and preset quantity of indoor unit is greater than or equal to 1；
Step 416, it when judging that the corresponding difference b of each indoor unit X1 is all larger than or is equal to second threshold, obtains indoor
The inlet temperature and outlet temperature of machine X2 calculates the difference c between inlet temperature and outlet temperature；
Step 418, judge whether the absolute value of difference c is less than or equal to third threshold value；
Step 420, when the judgment result is no, determine that the electric expansion valve of indoor unit X2 breaks down, carry out failure and mention
It wakes up；
Step 422, when the absolute value for judging the corresponding difference c of each indoor unit X2 is respectively less than or is equal to third threshold value,
Each indoor unit X1 shutdown is controlled, and controls each indoor unit X2 and opens refrigeration mode；
Step 424, after preset duration, obtain indoor unit X2 inlet temperature and outlet temperature, calculate outlet temperature and
Difference d between inlet temperature；
Step 426, judge whether difference d is greater than or equal to the 4th threshold value；
Step 428, when the judgment result is no, determine the import temperature sensing package and/or mouthfeel out for detecting indoor unit X2
Thermometer bulb is abnormal, carries out failure prompting.
In this embodiment, the is respectively less than or is equal in the absolute value of the corresponding difference c of each indoor unit X2 not opened
When three threshold values, it can determine that the electric expansion valve of indoor unit X2 is normal, system can enter to be judged in next step.It is opened specifically, closing
The indoor unit X1 of refrigeration mode is opened, and controls the indoor unit X2 not opened and opens refrigeration mode, and run preset duration, outdoor unit
Normal boot-strap detects indoor unit X2 inlet temperature and outlet temperature, calculates outlet temperature and the temperature difference of inlet temperature between the two
Value d, and judge whether difference d is greater than or equal to the 4th threshold value, if judging result be it is no, illustrate the import sense for indoor unit X2
Thermometer bulb and outlet temperature sensing package break down, such as temperature sensing package is improperly situated, the fracture of temperature sensing package capillary, at this time control room
Interior machine X2, outdoor unit carry out failure prompting, or display fault code, complete machine are not run.Control method through the invention, energy
It is whether abnormal that indoor unit temperature sensing package is enough detected in time, and carries out fault cues when detecting temperature sensing package exception, is avoided because of sense
Thermometer bulb performance issue influences the detection of electric expansion valve failure, to avoid air conditioner long-term under electric expansion valve fault condition
Operation, causes air conditioner further to damage, and keeps system operation relatively reliable.
As shown in figure 5, the flow diagram of air-conditioner control method according to still another embodiment of the invention.Wherein,
Air conditioner includes multiple indoor units, and each indoor unit includes electric expansion valve, the air-conditioner control method, comprising:
Step 502, when air conditioner powers on and shuts down, the inlet temperature and outlet temperature of indoor unit are obtained, calculates import
Difference a between temperature and outlet temperature；
Step 504, judge whether the absolute value of difference a is less than or equal to first threshold；
Step 506, when the judgment result is no, determine that electric expansion valve breaks down, carry out failure prompting；
Step 508, when judging that the corresponding difference a of each indoor unit is respectively less than or is equal to first threshold, outdoor unit is controlled
Booting, and control preset quantity indoor unit and open refrigeration mode；
The indoor unit for opening refrigeration mode is denoted as indoor unit X1, the indoor unit for not opening refrigeration mode is denoted as indoor unit
X2；
Step 510, after preset duration, obtain indoor unit X1 inlet temperature and outlet temperature, calculate outlet temperature and
Difference b between inlet temperature；
Step 512, judge whether difference b is greater than or equal to second threshold；
Step 514, when the judgment result is no, determine the import temperature sensing package and/or mouthfeel out for detecting indoor unit X1
Thermometer bulb is abnormal, carries out failure prompting；
Wherein, the difference of the total quantity and preset quantity of indoor unit is greater than or equal to 1；
Step 516, it when judging that the corresponding difference b of each indoor unit X1 is all larger than or is equal to second threshold, obtains indoor
The inlet temperature and outlet temperature of machine X2 calculates the difference c between inlet temperature and outlet temperature；
Step 518, judge whether the absolute value of difference c is less than or equal to third threshold value；
Step 520, when the judgment result is no, determine that the electric expansion valve of indoor unit X2 breaks down, carry out failure and mention
It wakes up；
Step 522, when the absolute value for judging the corresponding difference c of each indoor unit X2 is respectively less than or is equal to third threshold value,
Each indoor unit X1 shutdown is controlled, and controls each indoor unit X2 and opens refrigeration mode；
Step 524, after preset duration, obtain indoor unit X2 inlet temperature and outlet temperature, calculate outlet temperature and
Difference d between inlet temperature；
Step 526, judge whether difference d is greater than or equal to the 4th threshold value；
Step 528, when the judgment result is no, determine the import temperature sensing package and/or mouthfeel out for detecting indoor unit X2
Thermometer bulb is abnormal, carries out failure prompting；
Step 530, it when judging that the corresponding difference d of each indoor unit X2 is all larger than or is equal to four threshold values, obtains indoor
The inlet temperature and outlet temperature of machine X1 calculates the difference e between inlet temperature and outlet temperature；
Step 532, judge whether the absolute value of difference e is less than or equal to the 5th threshold value；
Step 534, when the judgment result is no, determine that the electric expansion valve of indoor unit X1 breaks down, carry out failure and mention
It wakes up.
In this embodiment, the 4th is all larger than or is equal in each corresponding difference d of indoor unit X2 for opening refrigeration mode
When threshold value, illustrate that indoor unit X2 temperature sensing package is normal, system enters to be judged in next step.Specifically, detecting other rooms that do not open
The inlet temperature and outlet temperature of interior machine X1, general indoor unit X1 electric expansion valve is normal, when indoor unit X2 opens refrigeration, not
Indoor unit X1 inlet temperature can be had an impact, therefore by calculating temperature gap e between the two with outlet temperature, and judged
Whether the absolute value of difference e is less than or equal to the 5th threshold value, can determine whether indoor unit X1 electric expansion valve is abnormal, if
The absolute value of difference e is greater than the 5th threshold value, then just illustrating that failure has occurred in electric expansion valve, when electric expansion valve breaks down
When, control indoor unit X1, outdoor unit carry out failure prompting, or display fault code, complete machine are not run.Control through the invention
Method can detect electronic expansion valve of indoor unit fault condition in time, and detect that it is laggard that electric expansion valve breaks down
Row prompt, avoids causing air conditioner further to damage due to electronic expansion valve of indoor unit failure, keeps system operation relatively reliable, prolongs
Long air conditioner service life promotes user satisfaction.
As shown in fig. 6, the schematic diagram of air conditioner controlling device according to an embodiment of the invention.Wherein, air conditioner
Including indoor unit, indoor unit includes electric expansion valve, which includes:
Memory 602, for storing computer program；
Processor 604, for execute computer program with: when air conditioner powers on and shuts down, obtain the import of indoor unit
Temperature and outlet temperature calculate the difference a between inlet temperature and outlet temperature；Judge the absolute value of difference a whether be less than or
Equal to first threshold；When the judgment result is no, determine that electric expansion valve breaks down, carry out failure prompting.
Temperature is arranged in air conditioner room unit inlet and outlet position respectively in air conditioner controlling device 600 provided by the invention
Degree sensor detects the inlet temperature and outlet temperature of indoor unit, calculates temperature between the two when air conditioner powers on and shuts down
Difference a, and judge whether the absolute value of difference a is less than or equal to first threshold, since electric expansion valve has been when air conditioner is shut down
Minimum aperture is shut or be transferred to, is passed through in pipeline without refrigerant, therefore indoor unit inlet temperature and outlet temperature should all be close to rings
Border temperature just illustrates that failure occurs in electric expansion valve when the absolute value of difference a between the two is greater than first threshold, such as stifled
Failure is filled in, when determining that electric expansion valve breaks down, control indoor unit, outdoor unit carry out failure prompting, or display failure generation
Code, complete machine are not run.Wherein, it should be appreciated by those skilled in the art that first threshold is greater than zero and close to zero, but tool is not limited
Body numerical value.Control device through the invention can detect electronic expansion valve of indoor unit fault condition in time, and detect
Electric expansion valve is prompted after breaking down, and avoids causing air conditioner further to damage due to electronic expansion valve of indoor unit failure
It is bad, keep system operation relatively reliable, extend air conditioner service life, promotes user satisfaction.
In one embodiment of the invention, it is preferable that the quantity of indoor unit is multiple；Processor 604 is also used to execute
Computer program with: when judge the corresponding difference a of each indoor unit be respectively less than or be equal to first threshold when, control outdoor unit open
Machine, and control preset quantity indoor unit and open refrigeration mode；The indoor unit for opening refrigeration mode is denoted as indoor unit X1, will not opened
The indoor unit for opening refrigeration mode is denoted as indoor unit X2；After preset duration, the inlet temperature and outlet temperature of indoor unit X1 are obtained,
Calculate the difference b between outlet temperature and inlet temperature；Judge whether difference b is greater than or equal to second threshold；Work as judging result
When being no, determines the import temperature sensing package and/or outlet temperature sensing package exception for detecting indoor unit X1, carry out failure prompting；Wherein,
The total quantity of indoor unit and the difference of preset quantity are greater than or equal to 1.
In this embodiment, air conditioner includes multiple indoor units, such as multi-connected air conditioner device, when each indoor unit inlet temperature
When being respectively less than with the difference a of outlet temperature or be equal to first threshold, system enters to be judged in next step.Specifically, outdoor unit is just
Normally opened machine, setting one or more indoor unit X1 open refrigeration mode, and the available machine time is preset duration, wherein indoor unit X1's
The difference of total quantity and preset quantity that quantity (i.e. preset quantity) must satisfy indoor unit is greater than or equal to 1；Preset time
It is arranged related to air conditioner current operating condition such as frequency etc., it is intended to be operated normally after so that air conditioner is switched on, to get
The inlet temperature and outlet temperature of indoor unit X1 under normal refrigerating state, by judging outlet temperature and inlet temperature between the two
Difference b whether be greater than or equal to second threshold, when the judgment result is No, can determine that for detecting indoor unit X1 inlet temperature
With the import temperature sensing package of outlet temperature and outlet temperature sensing package abnormal state, as temperature sensing package is improperly situated, temperature sensing package capillary
Pipe fracture etc., controls indoor unit X1, outdoor unit at this time, carries out failure prompting, or display fault code, complete machine are not run.Wherein,
Second threshold is greater than zero.Whether abnormal control device through the invention can detect indoor unit temperature sensing package in time, and examine
Fault cues are carried out when measuring temperature sensing package exception, avoid influencing the detection of electric expansion valve failure because of temperature sensing package performance issue, from
And air conditioner longtime running under electric expansion valve fault condition is avoided, it causes air conditioner further to damage, makes system operation more
Add reliable.
In one embodiment of the invention, it is preferable that processor 604, be also used to execute computer program with: judging
When the corresponding difference b of each indoor unit X1 is all larger than or is equal to second threshold, the inlet temperature and outlet temperature of indoor unit X2 are obtained
Degree calculates the difference c between inlet temperature and outlet temperature；Judge whether the absolute value of difference c is less than or equal to third threshold value；
When the judgment result is no, determine that the electric expansion valve of indoor unit X2 breaks down, carry out failure prompting.
In this embodiment, when judging that the corresponding difference b of each indoor unit X1 is all larger than or is equal to second threshold, can sentence
It is normal to determine indoor unit XI temperature sensing package, system enters to be judged in next step.Specifically, detect the indoor unit X2 that other are not opened into
Mouth temperature and outlet temperature, general indoor unit X2 electric expansion valve is normal, can't be to indoor unit when indoor unit X1 opens refrigeration
X2 inlet temperature has an impact with outlet temperature, therefore by calculating temperature gap c between the two, and judges that difference c's is exhausted
Whether third threshold value is less than or equal to value, can determine whether indoor unit X2 electric expansion valve is abnormal, if difference c's is exhausted
Third threshold value is greater than to value, then just illustrate that failure has occurred in electric expansion valve, when electric expansion valve breaks down, control room
Interior machine X2, outdoor unit carry out failure prompting, or display fault code, complete machine are not run.Control device through the invention, can
It detects electronic expansion valve of indoor unit fault condition in time, and is prompted after detecting that electric expansion valve breaks down, kept away
Exempt to cause air conditioner further to damage due to electronic expansion valve of indoor unit failure, keeps system operation relatively reliable, extend air conditioner
Service life promotes user satisfaction.
In one embodiment of the invention, it is preferable that processor 604, be also used to execute computer program with: work as judgement
When the absolute value of the corresponding difference c of each indoor unit X2 is respectively less than or is equal to third threshold value, each indoor unit X1 shutdown is controlled, and
It controls each indoor unit X2 and opens refrigeration mode；After preset duration, the inlet temperature and outlet temperature of indoor unit X2, meter are obtained
Calculate the difference d between outlet temperature and inlet temperature；Judge whether difference d is greater than or equal to the 4th threshold value；When judging result is
When no, determine the import temperature sensing package and/or outlet temperature sensing package exception for detecting indoor unit X2, carry out failure prompting.
In this embodiment, the is respectively less than or is equal in the absolute value of the corresponding difference c of each indoor unit X2 not opened
When three threshold values, it can determine that the electric expansion valve of indoor unit X2 is normal, system can enter to be judged in next step.It is opened specifically, closing
The indoor unit X1 of refrigeration mode is opened, and controls the indoor unit X2 not opened and opens refrigeration mode, and run preset duration, outdoor unit
Normal boot-strap detects indoor unit X2 inlet temperature and outlet temperature, calculates outlet temperature and the temperature difference of inlet temperature between the two
Value d, and judge whether difference d is greater than or equal to the 4th threshold value, if judging result be it is no, illustrate the import sense for indoor unit X2
Thermometer bulb and outlet temperature sensing package break down, such as temperature sensing package is improperly situated, the fracture of temperature sensing package capillary, at this time control room
Interior machine X2, outdoor unit carry out failure prompting, or display fault code, complete machine are not run.Control device through the invention, energy
It is whether abnormal that indoor unit temperature sensing package is enough detected in time, and carries out fault cues when detecting temperature sensing package exception, is avoided because of sense
Thermometer bulb performance issue influences the detection of electric expansion valve failure, to avoid air conditioner long-term under electric expansion valve fault condition
Operation, causes air conditioner further to damage, and keeps system operation relatively reliable.
In one embodiment of the invention, it is preferable that processor 604, be also used to execute computer program with: work as judgement
When the corresponding difference d of each indoor unit X2 is all larger than or is equal to four threshold values, the inlet temperature and outlet temperature of indoor unit X1 are obtained
Degree calculates the difference e between inlet temperature and outlet temperature；Judge whether the absolute value of difference e is less than or equal to the 5th threshold value；
When the judgment result is no, determine that the electric expansion valve of indoor unit X1 breaks down, carry out failure prompting.
In this embodiment, the 4th is all larger than or is equal in each corresponding difference d of indoor unit X2 for opening refrigeration mode
When threshold value, illustrate that indoor unit X2 temperature sensing package is normal, system enters to be judged in next step.Specifically, detecting other rooms that do not open
The inlet temperature and outlet temperature of interior machine X1, general indoor unit X1 electric expansion valve is normal, when indoor unit X2 opens refrigeration, not
Indoor unit X1 inlet temperature can be had an impact, therefore by calculating temperature gap e between the two with outlet temperature, and judged
Whether the absolute value of difference e is less than or equal to the 5th threshold value, can determine whether indoor unit X1 electric expansion valve is abnormal, if
The absolute value of difference e is greater than the 5th threshold value, then just illustrating that failure has occurred in electric expansion valve, when electric expansion valve breaks down
When, control indoor unit X1, outdoor unit carry out failure prompting, or display fault code, complete machine are not run.Control through the invention
Device can detect electronic expansion valve of indoor unit fault condition in time, and detect that it is laggard that electric expansion valve breaks down
Row prompt, avoids causing air conditioner further to damage due to electronic expansion valve of indoor unit failure, keeps system operation relatively reliable, prolongs
Long air conditioner service life promotes user satisfaction.
Specific embodiment: proposing a kind of control method of machine electric expansion valve self-checking function in multi-gang air-conditioner, wherein
Multi-line system is as shown in Figure 7a, which is made of multiple outdoor units 702 and multiple indoor units 704, respectively in each interior
Temperature sensor is arranged in 704 evaporator of machine and outlet port, and as shown in Figure 7b, wherein inlet temperature sensor T2a, is detected
Inlet temperature be denoted as T2a, outlet temperature sensor T2b, the Outlet Temperature value of detection is denoted as T2b, interior machine electric expansion valve
EXV.The flow diagram of the control method is as shown in Figure 7 c, specifically comprises the following steps:
Step 702, multi-line system is powered on and is shut down；
Step 704, every indoor unit is detected, | T2b-T2a |≤a；
Step 706, ineligible indoor unit report failure, outdoor unit report failure, complete machine are shut down；
Step 708, eligible, then it sets indoor unit X1 and opens refrigeration mode, outer machine normal boot-strap, available machine time T；
Wherein, indoor unit X1 can be one or one or more, but interior machine X1 number of units is necessarily less than or is equal to the total number of units of interior machine
n-1；
Step 710, indoor unit X1, T2b-T2a >=b are detected；
Step 712, ineligible indoor unit X1 reports failure, outdoor unit report failure, and complete machine is shut down；
Step 714, eligible, then it detects other and does not open indoor unit X2, | T2b-T2a |≤c；Ineligible room
Interior machine executes step 706；It is eligible, then follow the steps 716；
Step 716, indoor unit X1 is closed, the indoor unit X2 other than indoor unit X1 is opened and enters refrigeration mode, outdoor unit is just
Normally opened machine, available machine time T；
Step 718, indoor unit X2, T2b-T2a >=d are detected；
Step 720, ineligible indoor unit X2 reports failure, outdoor unit report failure, and complete machine is shut down；
Step 722, eligible, then indoor unit X1 is detected, | T2b-T2a |≤e；Ineligible indoor unit executes
Step 706；It is eligible, then follow the steps 724；
Step 724, normal boot-strap.
Control method provided by the invention can detect electronic expansion valve of indoor unit fault condition in time, avoid system
Since the interior sub- expansion valve malfunction of electromechanics causes system further to be damaged, keep system operation relatively reliable.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of air-conditioner control method, the air conditioner includes indoor unit, and the indoor unit includes electric expansion valve, feature
It is, which comprises
When the air conditioner is powered on and shut down, the inlet temperature and outlet temperature of the indoor unit are obtained, the import is calculated
Difference a between temperature and the outlet temperature；
Judge whether the absolute value of the difference a is less than or equal to first threshold；
When the judgment result is no, determine that the electric expansion valve breaks down, carry out failure prompting.
2. air-conditioner control method according to claim 1, which is characterized in that further include:
The quantity of the indoor unit is multiple；
When judging that the corresponding difference a of each indoor unit is respectively less than or is equal to the first threshold, the room is controlled
Outer machine booting, and control preset quantity indoor unit and open refrigeration mode；
The indoor unit for opening refrigeration mode is denoted as indoor unit X1, the indoor unit for not opening refrigeration mode is denoted as room
Interior machine X2；
After preset duration, the inlet temperature and outlet temperature of the indoor unit X1 are obtained, calculates the outlet temperature and described
Difference b between inlet temperature；
Judge whether the difference b is greater than or equal to second threshold；
When the judgment result is no, determine the import temperature sensing package and/or outlet temperature sensing package exception for detecting the indoor unit X1,
Carry out failure prompting；
Wherein, the difference of the total quantity of the indoor unit and the preset quantity is greater than or equal to 1.
3. air-conditioner control method according to claim 2, which is characterized in that further include:
When judging that the corresponding difference b of each indoor unit X1 is all larger than or is equal to the second threshold, described in acquisition
The inlet temperature and outlet temperature of indoor unit X2 calculates the difference c between the inlet temperature and the outlet temperature；
Judge whether the absolute value of the difference c is less than or equal to third threshold value；
When the judgment result is no, determine that the electric expansion valve of the indoor unit X2 breaks down, carry out failure prompting.
4. air-conditioner control method according to claim 3, which is characterized in that further include:
When the absolute value for judging the corresponding difference c of each indoor unit X2 is respectively less than or is equal to the third threshold value,
Each indoor unit X1 shutdown is controlled, and controls each indoor unit X2 and opens refrigeration mode；
After the preset duration, obtain the inlet temperature and outlet temperature of the indoor unit X2, calculate the outlet temperature and
Difference d between the inlet temperature；
Judge whether the difference d is greater than or equal to the 4th threshold value；
When the judgment result is no, determine the import temperature sensing package and/or outlet temperature sensing package exception for detecting the indoor unit X2,
Carry out failure prompting.
5. air-conditioner control method according to claim 4, which is characterized in that further include:
When judging that the corresponding difference d of each indoor unit X2 is all larger than or is equal to four threshold value, described in acquisition
The inlet temperature and outlet temperature of indoor unit X1, calculates the difference e between the inlet temperature and the outlet temperature；
Judge whether the absolute value of the difference e is less than or equal to the 5th threshold value；
When the judgment result is no, determine that the electric expansion valve of the indoor unit X1 breaks down, carry out failure prompting.
6. a kind of air conditioner controlling device, the air conditioner includes indoor unit, and the indoor unit includes electric expansion valve, feature
It is, described device includes:
Memory, for storing computer program；
Processor, for execute the computer program with:
When the air conditioner is powered on and shut down, the inlet temperature and outlet temperature of the indoor unit are obtained, the import is calculated
Difference a between temperature and the outlet temperature；Judge whether the absolute value of the difference a is less than or equal to first threshold；When
When judging result is no, determine that the electric expansion valve breaks down, carries out failure prompting.
7. air conditioner controlling device according to claim 6, which is characterized in that
The quantity of the indoor unit is multiple；
The processor, be also used to execute the computer program with:
When judging that the corresponding difference a of each indoor unit is respectively less than or is equal to the first threshold, the room is controlled
Outer machine booting, and control preset quantity indoor unit and open refrigeration mode；
The indoor unit for opening refrigeration mode is denoted as indoor unit X1, the indoor unit for not opening refrigeration mode is denoted as room
Interior machine X2；
After preset duration, the inlet temperature and outlet temperature of the indoor unit X1 are obtained, calculates the inlet temperature and described
Difference b between outlet temperature；
Judge whether the difference b is greater than or equal to second threshold；
When the judgment result is no, determine the import temperature sensing package and/or outlet temperature sensing package exception for detecting the indoor unit X1,
Carry out failure prompting；
Wherein, the difference of the total quantity of the indoor unit and the preset quantity is greater than or equal to 1.
8. air conditioner controlling device according to claim 7, which is characterized in that the processor is also used to execute described
Computer program with:
When judging that the corresponding difference b of each indoor unit X1 is all larger than or is equal to the second threshold, described in acquisition
The inlet temperature and outlet temperature of indoor unit X2 calculates the difference c between the inlet temperature and the outlet temperature；
Judge whether the absolute value of the difference c is less than or equal to third threshold value；
When the judgment result is no, determine that the electric expansion valve of the indoor unit X2 breaks down, carry out failure prompting.
9. air conditioner controlling device according to claim 8, which is characterized in that the processor is also used to execute described
Computer program with:
When the absolute value for judging the corresponding difference c of each indoor unit X2 is respectively less than or is equal to the third threshold value,
Each indoor unit X1 shutdown is controlled, and controls each indoor unit X2 and opens refrigeration mode；
After the preset duration, obtain the inlet temperature and outlet temperature of the indoor unit X2, calculate the inlet temperature and
Difference d between the outlet temperature；
Judge whether the difference d is greater than or equal to the 4th threshold value；
When the judgment result is no, determine the import temperature sensing package and/or outlet temperature sensing package exception for detecting the indoor unit X2,
Carry out failure prompting.
10. air conditioner controlling device according to claim 9, which is characterized in that the processor is also used to execute described
Computer program with:
When judging that the corresponding difference d of each indoor unit X2 is all larger than or is equal to four threshold value, described in acquisition
The inlet temperature and outlet temperature of indoor unit X1, calculates the difference e between the inlet temperature and the outlet temperature；
Judge whether the absolute value of the difference e is less than or equal to the 5th threshold value；
When the judgment result is no, determine that the electric expansion valve of the indoor unit X1 breaks down, carry out failure prompting.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542196A (en) * | 2019-09-16 | 2019-12-06 | 广东美的暖通设备有限公司 | Detection assembly for air conditioner, control method, control device and air conditioner |
| CN111425987A (en) * | 2020-04-07 | 2020-07-17 | 广东美的暖通设备有限公司 | Indoor unit of air conditioner, control method, air conditioner and readable storage medium |
| CN113446193A (en) * | 2021-06-23 | 2021-09-28 | 珠海格力电器股份有限公司 | Control method and device of centralized control refrigeration system and centralized control refrigeration system |
| CN114754413A (en) * | 2022-04-11 | 2022-07-15 | 青岛海信日立空调系统有限公司 | Multi-split air conditioning system and fault positioning method |
| WO2023197711A1 (en) * | 2022-04-11 | 2023-10-19 | 青岛海信日立空调系统有限公司 | Multi-split air-conditioning system, fault positioning method, and fault diagnosis model training method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101178236A (en) * | 2006-11-10 | 2008-05-14 | 海尔集团公司 | Air conditioner malfunction detection method and system |
-
2018
- 2018-09-20 CN CN201811102938.9A patent/CN109282424B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101178236A (en) * | 2006-11-10 | 2008-05-14 | 海尔集团公司 | Air conditioner malfunction detection method and system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542196A (en) * | 2019-09-16 | 2019-12-06 | 广东美的暖通设备有限公司 | Detection assembly for air conditioner, control method, control device and air conditioner |
| CN110542196B (en) * | 2019-09-16 | 2021-05-18 | 广东美的暖通设备有限公司 | Detection assembly for air conditioner, control method, control device and air conditioner |
| CN111425987A (en) * | 2020-04-07 | 2020-07-17 | 广东美的暖通设备有限公司 | Indoor unit of air conditioner, control method, air conditioner and readable storage medium |
| CN113446193A (en) * | 2021-06-23 | 2021-09-28 | 珠海格力电器股份有限公司 | Control method and device of centralized control refrigeration system and centralized control refrigeration system |
| CN114754413A (en) * | 2022-04-11 | 2022-07-15 | 青岛海信日立空调系统有限公司 | Multi-split air conditioning system and fault positioning method |
| WO2023197711A1 (en) * | 2022-04-11 | 2023-10-19 | 青岛海信日立空调系统有限公司 | Multi-split air-conditioning system, fault positioning method, and fault diagnosis model training method |
| CN114754413B (en) * | 2022-04-11 | 2023-10-27 | 青岛海信日立空调系统有限公司 | Multi-split air conditioning system and fault positioning method |
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